BMW announced the unveiling of a new generation of four-cylinder diesel engines for the BMW 5 Series. The Bavarian-based automaker is also introducing a new 8-speed transmission for many of its vehicles.

The four-cylinder diesel engines will premier on the BMW 518d, the BMW 520d, and the BMW 520d xDrive, all of which are available as sedan and touring models. Featuring an aluminum crankcase with thermally joined liners, integrated balance shafts, and a map-controlled oil pump, the new engine delivers a maximum output of 150 horsepower....